[jira] [Updated] (HBASE-22631) assign failed may make gced parent region appear again !!!

["yuhuiyang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-22631?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

yuhuiyang updated HBASE-22631:
------------------------------
    Attachment: HBASE-22631-branch-2.1-01.patch
        Status: Patch Available  (was: Reopened)

> assign failed may make gced parent region appear again !!!
> ----------------------------------------------------------
>
>                 Key: HBASE-22631
>                 URL: https://issues.apache.org/jira/browse/HBASE-22631
>             Project: HBase
>          Issue Type: Bug
>          Components: proc-v2
>    Affects Versions: 2.1.1
>            Reporter: yuhuiyang
>            Priority: Major
>         Attachments: HBASE-22631-branch-2.1-01.patch, assignProcedure.txt
>
>
> When i assign a region A the process is as follows：
> step1 : A is assigned to rs1 , and rs1 fails to open it .
> step2 : assignProcedure handleFailure .
> step3 : A is assign to rs2 and rs success to open it .
> Above is the normal flow . However when rs1 is restart after the reigon A was split and GCRegionProcedure was successed , the region A appare again !
> The region is that reigon A is not removed from the serverMap correctly when assignprocedure handleFailure . Because the code regionNode.offline() make the regionNode's regionLocation to be null and make regionNode's state to OFFLINE . So when the code env.getAssignmentManager().undoRegionAsOpening(regionNode) do nothing . So when the rs1 restart event triggers a serverCrashProcedure, it will get reigons from serverMap and it will get the region A then A will be assigned and hdfs dir will be created. 



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